Changes

Summary

1. Rewrite paragraph on lookup in import clasuses to improve readability in the presence of lots of punctuation symbols (details)
2. Re-write the list of possible import clause forms as suggested by Hans (details)
3. Reflow some lines on import clauses (details)
4. Fix em-dash/comma mismatch (details)

Rewrite paragraph on lookup in import clasuses to improve readability in the presence of lots of punctuation symbols

Re-write the list of possible import clause forms as suggested by Hans

Reflow some lines on import clauses

Fix em-dash/comma mismatch